Check if the word is or almost is a palindrome. To be almost a palindrome, we would need to change only one character.

palindrome.py

def IsAlmostPalindrome(word):
    """
    Check if the word is or almost is a palindrome.
    
    To be almost a palindrome, we would need to change
    only one character.
    
    Parameters
    ----------
    
    word: str
        The word to be checked
        
    Returns
    -------
    
    True if the word is a palindrome or almost. False
    otherwise    
    """
    count = 0
    for i in range(len(word)//2):
        if word[i] != word[-i-1]:
            count+=1

        if count >1:
            return False

    return True


assert IsAlmostPalindrome('abccba')
assert IsAlmostPalindrome('abccbg')
assert not IsAlmostPalindrome('abccfg')